Immersible aerator and/or mixer apparatus
US4720361A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1986 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Feb 19, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/23364
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The object of the present invention is to protect the driver unit (1) of an immersible aerator and/or mixer apparatus against the surrounding liquid. The driver unit (1) is covered with a compact protective casing (5), to the bottom part whereof the gas to be lead into the mixer (14) is conducted through the gas supply pipe (2). At the junction of the gas supply pipe (2), inside the protective casing (5), there is located a gas supply channel (6) which is open at both ends, and this gas supply channel (6) conducts the gas to flow mainly upwards, to the top part of the driver unit. At its bottom, the protective casing (5) is attached to the base disc (7), and the gas flows through the holes (10) provided in the base disc (7) into the channel formed by the gas control cone (11) and the inner cone (12), and therefrom into the liquid either via the partly hollow secondary axis (13) of the mixer or via a separate gas pipe. During an interruption in the gas supply, the inner cone (12) forms a gas lock which protects the top end of the secondary axis, and the roughly 90.degree. angle in the gas supply pipe (2) forms a gas lock which protects the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.